13944506 has 4 divisors (see below), whose sum is σ = 20916762. Its totient is φ = 6972252.

The previous prime is 13944503. The next prime is 13944517. The reversal of 13944506 is 60544931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60544931 = 83 ⋅729457.

It can be written as a sum of positive squares in only one way, i.e., 11868025 + 2076481 = 3445^2 + 1441^2 .

It is not an unprimeable number, because it can be changed into a prime (13944503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3486125 + ... + 3486128.

Almost surely, 2^13944506 is an apocalyptic number.

13944506 is a deficient number, since it is larger than the sum of its proper divisors (6972256).

13944506 is an equidigital number, since it uses as much as digits as its factorization.

13944506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6972255.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 13944506 is about 3734.2343258023. The cubic root of 13944506 is about 240.6953560725.

The spelling of 13944506 in words is "thirteen million, nine hundred forty-four thousand, five hundred six".